forked from RepoMirrors/bemenu
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
/**
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* @file client.c
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*
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* Sample client using the libbemenu.
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* Also usable as dmenu replacement.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stddef.h>
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#include <assert.h>
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#include <bemenu.h>
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static ptrdiff_t getLine(char **outLine, size_t *outAllocated, FILE *stream)
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{
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size_t len = 0, allocated;
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char *s, *buffer;
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assert(outLine != NULL);
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assert(outAllocated != NULL);
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if (stream == NULL || feof(stream) || ferror(stream))
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return -1;
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allocated = *outAllocated;
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buffer = *outLine;
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if (buffer == NULL || allocated == 0) {
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if (!(buffer = calloc(1, (allocated = 1024) + 1)))
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return -1;
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}
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for (s = buffer;;) {
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if (fgets(s, allocated - (s - buffer), stream) == NULL)
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return -1;
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len = strlen(s);
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if (feof(stream))
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break;
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if (len > 0 && s[len - 1] == '\n')
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break;
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if (len + 1 >= allocated - (s - buffer)) {
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void *tmp = realloc(buffer, 2 * allocated);
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if (!tmp)
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break;
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buffer = tmp;
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s = buffer + allocated - 1;
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memset(s, 0, allocated - (s - buffer));
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allocated *= 2;
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} else {
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s += len;
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}
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}
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*outAllocated = allocated;
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*outLine = buffer;
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if (s[len - 1] == '\n')
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s[len - 1] = 0;
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return s - buffer + len;
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}
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static void readItemsToMenuFromStdin(bmMenu *menu)
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{
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ptrdiff_t len;
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size_t size;
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char *line = NULL;
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while ((len = getLine(&line, &size, stdin)) != -1) {
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bmItem *item = bmItemNew((len > 0 ? line : NULL));
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if (!item)
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break;
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bmMenuAddItem(menu, item);
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}
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if (line)
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free(line);
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}
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/**
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* Main method
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*
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* This function gives and takes the life of our program.
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*
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* @param argc Number of arguments from command line
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* @param argv Pointer to array of the arguments
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* @return exit status of the program
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*/
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int main(int argc, char **argv)
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{
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(void)argc, (void)argv;
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bmMenu *menu = bmMenuNew(BM_DRAW_MODE_CURSES);
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if (!menu)
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return EXIT_FAILURE;
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bmMenuSetTitle(menu, "bemenu");
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readItemsToMenuFromStdin(menu);
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bmKey key;
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unsigned int unicode;
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int status = 0;
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do {
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bmMenuRender(menu);
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key = bmMenuGetKey(menu, &unicode);
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} while ((status = bmMenuRunWithKey(menu, key, unicode)) == BM_RUN_RESULT_RUNNING);
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if (status == BM_RUN_RESULT_SELECTED) {
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bmItem *item = bmMenuGetSelectedItem(menu);
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printf("%s\n", bmItemGetText(item));
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}
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bmMenuFree(menu);
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return (status == BM_RUN_RESULT_SELECTED ? EXIT_SUCCESS : EXIT_FAILURE);
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}
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/* vim: set ts=8 sw=4 tw=0 :*/
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